The productivity and nutritive value of tropical grass/legume pastures rotationally grazed by N'Dama cattle at Ibadan, Nigeria

Okorie, I. I.; Hill, D. H.; McIlroy, R. J.

doi:10.1017/s0021859600064819

Cited by 12 publications

(6 citation statements)

References 2 publications

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“…As can be seen from the least squares constants in of more severe culling of males than females at these two ages. In general, the least squares means and effects of sex of calf agree with means reported in other studies (10,11,13,24,25).…”

Section: Body Weightssupporting

confidence: 90%

“…The weights for the N'Dama are the least squares weights of females derived from the means and sex constants of Table 10. These means are comparable to those reported in other studies (11,20,21,24,25). The means for Holsteins and Guernseys are the least squares means of 160 Holsteins and 98 Guernseys in the crossbreeding project at the University of Illinois, some of which are included in (29) .…”

Section: H 2 = +supporting

confidence: 88%

“…The results of O Korie et al(24) suggestthis. In connection with dressing percentage it should be pointed out that in Sierra Leone a much greater proportion of a beef animal, sheep, or pig is sold and eaten than in Western Europe or the United States.…”

mentioning

confidence: 88%

“…At the Musaia station, males are generally kept until 3 years of age before they are slaughtered or used as sires. It appears that most N'Dama in Africa are not slaughtered until after they reach 3 years of age (10,11,24). It is aftr 3 years of age that most of the culling of unwanted males occurs; thus, not until 4 years of age does the number of females greatly exceed the number of males.…”

Section: Body Weightsmentioning

confidence: 99%

“…The dressing percentage for animals slaughtered under local conditions would be subject to many factors as the animals may have been walked for great distances, dehydrated, and hungry before slaughter. O Korie et al (24) reported a dressing percentage of 52.6 to 54.1 percent for N'Dama grown on improved pastures. Also shown in Approximately one-fourth of each breed group was slaughtered at each of the weights 675, 850, 1,025 and 1,200 pounds.…”

Section: Slaughter Datamentioning

confidence: 99%

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A study of the N'Dama cattle at the Musaia Animal Husbandry Station in Sierra Leone / R.W. Touchberry.

Touchberry¹

1967

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The live weights of the N'Dama cattle at the Musaia Animal Husbandry Station, Musaia, Sierra Leone, have been recorded monthly since 1949. In 1965 live weights were available on 986, 871, 795, 555, 372 and 182 animals at birth, 6, 12, 24, 36 and 48 months of age. The numbers of males and females did not differ significantly until the age of 36 months. The average age at first calving was 39.4 months with an average calving interval of 467 days. Most calves were born in the period from September through February. A least squares analysis of the data on weights indicated that the N'Dama cattle at the Musaia station are small; the least squares means being 36.2, 159.9, 230.8, 287.0, 359.7, 425.5 and 471.4 pounds at birth, 6, 12, 18, 24, 30 and 36 months of age respectively. Male calves were heavier than females at all ages, and the weight at a given age was markedly affected by year and month of birth. Average weight at a given age changed little during the 15 years 1949 through 1963. Heritability of weight at the different ages was relatively low, being approximately 0.10 to 0.20. Under present conditions mass selection for weight at one year of age would at best result in an approximate 12.8 pound increase per generation, or approximately 1.8 pounds per year. The expected genetic gain for weight at other ages was not appreciably different. For 54 animals, 51 males and 3 females, on which slaughter data were available, the average age at slaughter was 39.1 months while the mean weight was 512.1 pounds. The weight of the carcass accounted for only 41.6 percent of the live weight. From the above analyses it was concluded that the ability of the N'Dama cattle to produce meat under Musaia conditions was rather limited. From reports of other studies (9, 12, 20, 21) it appears that the ability of the N'Dama to produce milk is also limited. It thus appears that the main asset of the N'Dama breed is its tolerance (28) to piroplasmoses, trypanosomiasis, and trypanosomes in general. Just how well the N'Dama would perform as a producer of meat and milk under more optimum feeding and management conditions is not really known; however, the work of Anliker (1), Montsma (20, 21) and O Korie et al. (24) indicates that under more optimum levels of feeding the performance of the N'Dama is not as good as that of most European breeds or the Santa Gertrudis. If crosses between N'Dama and European breeds possess some of the tolerance of the N'Dama to piroplasmoses, trypanosomiasis, and trypanosomes in general, N'Dama crossing schemes should be undertaken to develop cattle for Sierra Leone that are better producers of meat and milk. Plans for producing cheap but adequate feed, both concentrate and roughage, for the dry season should be developed simultaneously with the breeding scheme. sity of Illinois/USAID contract afe-132, June-July, 1965, and in cooperation with the Sierra Leone Ministry of Agriculture and Natural Resources (Agriculture Division). * Numbers in parentheses refer to references listed on page 39.

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Section: Body Weightssupporting

confidence: 90%

Section: H 2 = +supporting

confidence: 88%

mentioning

confidence: 88%

Section: Body Weightsmentioning

confidence: 99%

Section: Slaughter Datamentioning

confidence: 99%

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A study of the N'Dama cattle at the Musaia Animal Husbandry Station in Sierra Leone / R.W. Touchberry.

Touchberry¹

1967

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Tropical Pastures

Hutton¹

1970

Advances in Agronomy

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The measurement of yield, voluntary intake and animal production of tropical pasture mixtures

Olubajo

Oyenuga

1971

J. Agric. Sci.

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The consumption of three different tropical pastures by the conventional clipping method and by the nitrogen-chromic oxide technique were assessed and compared over a 2-year period. The clipping method was found to give consistently higher estimates of consumption of herbage dry matter by grazing steers than the chromic oxide method by approximately 16, 14 and 25% respectively for treatments E (Gynodon +Centrosema), F (Mixture E + Stylosanthes) and G (Digitaria + two legumes), when data for the 2 years were pooled for each treatment.The mean live-weight gain over the 2-year period was 0-19 kg per head per day. This figure is essentially in agreement with that obtained for the same group of animals in the previous 2 years. As would be expected the lowest gain was recorded during the dry season when there was little or nothing to graze. It was similarly observed that during a severe attack of trypanosomiasis the animals sustained some losses even though there was abundant pasture to graze.

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The productivity and nutritive value of tropical grass/legume pastures rotationally grazed by N'Dama cattle at Ibadan, Nigeria

Cited by 12 publications

References 2 publications

A study of the N'Dama cattle at the Musaia Animal Husbandry Station in Sierra Leone / R.W. Touchberry.

A study of the N'Dama cattle at the Musaia Animal Husbandry Station in Sierra Leone / R.W. Touchberry.

Tropical Pastures

The measurement of yield, voluntary intake and animal production of tropical pasture mixtures

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